28517140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{419}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 62233920

約数和(自身を除く): 33716780

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 83, 164, 166, 205, 332, 410, 415, 419, 820, 830, 838, 1660, 1676, 2095, 3403, 4190, 6806, 8380, 13612, 17015, 17179, 34030, 34358, 34777, 68060, 68716, 69554, 85895, 139108, 171790, 173885, 343580, 347770, 695540, 1425857, 2851714, 5703428, 7129285, 14258570, 28517140]

約数ペア:

[(1, 28517140), (2, 14258570), (4, 7129285), (5, 5703428), (10, 2851714), (20, 1425857), (41, 695540), (82, 347770), (83, 343580), (164, 173885), (166, 171790), (205, 139108), (332, 85895), (410, 69554), (415, 68716), (419, 68060), (820, 34777), (830, 34358), (838, 34030), (1660, 17179), (1676, 17015), (2095, 13612), (3403, 8380), (4190, 6806)]